1 8
1 0 -1 1 0 0 0 -1

-1

24 17
1 0 0 0 -1 0 0 0 0 0 1 -1 1 0 0 0 0
1 0 0 0 0 0 0 -1 0 0 1 -1 1 0 0 0 0
1 0 0 0 0 -1 0 0 0 0 1 -1 1 0 0 0 0
1 0 0 0 0 0 0 0 -1 0 1 -1 1 0 0 0 0
1 0 0 0 0 0 1 0 0 0 -1 1 0 -1 0 0 0
1 -1 0 0 0 0 0 0 0 0 1 -1 0 1 0 0 0
1 0 -1 0 0 0 0 0 0 0 1 -1 0 0 1 0 0
1 0 0 1 0 0 0 0 0 0 -1 1 0 0 0 -1 -1
1 0 0 0 1 0 0 0 0 0 -1 0 0 0 0 0 -1
1 0 0 0 1 1 -1 0 0 0 -1 0 0 0 0 0 0
1 0 0 -1 0 0 0 2 0 0  -1 0 0 0 0 0 0
1 0 0 0 0 0 0 1 0 0 -1 0 0 0 0 0 -1
1 0 0 0 0 0 0 1 1 -1 -1 0 0 0 0 0 0
1 0 0 0 0 1 0 0 0 0 -1 0 0 0 0 0 -1
1 0 0 0 0 0 0 0 1 0 -1 0 0 0 0 0 -1
1 0 0 0 0 0 1 0 0 0 -1 0 0 0 0 0 -1
1 0 0 0 0 0 0 0 0 1 -1 0 0 0 0 0 -1
1 1 1 0 0 0 0 0 0 0 -2 2 0 -1 -1 0 0
1 0 0 0 2 0 0 0 0 0 -2 1 0 0 0 -1 0
1 0 -1 0 0 0 0 0 4 3 -6 0 0 0 0 0 0
1 0 0 0 0 4 3 0 0 0 -7 1 0 0 -1 0 0
1 1 1 1 0 0 0 -2 -4 -4 7 0 0 0 0 0 0
1 0 0 0 -2 -4 -4 0 0 0 10 -3 0 1 1 1 0
1 -1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0
